refactor(core): stack trace mapping (#8660)

This commit adds "Deno.core.createPrepareStackTrace". This function
was moved from "cli/rt/40_error_stack.js" to unify handling of stack frames in core
(before this PR there was implicit dependency on logic in "core/error.rs::JsError").
Unfortunately formatting logic must still be duplicated in "cli/error.js::PrettyJsError"
to provide coloring, but currently there's no solution to this problem.
"createPrepareStackTrace" can accept a single argument; a function that takes
a location and provides source mapped location back.

1 files changed, 0 insertions, 99 deletions

diff --git a/cli/tests/unit/error_stack_test.ts b/cli/tests/unit/error_stack_test.ts
index a5fe13796..ad5f2e093 100644
--- a/cli/tests/unit/error_stack_test.ts
+++ b/cli/tests/unit/error_stack_test.ts
@@ -1,87 +1,6 @@
 // Copyright 2018-2020 the Deno authors. All rights reserved. MIT license.
 import { assert, assertEquals, assertMatch, unitTest } from "./test_util.ts";
 
-// @ts-expect-error TypeScript (as of 3.7) does not support indexing namespaces by symbol
-const { setPrepareStackTrace } = Deno[Deno.internal];
-
-interface CallSite {
-  getThis(): unknown;
-  getTypeName(): string | null;
-  // deno-lint-ignore ban-types
-  getFunction(): Function | null;
-  getFunctionName(): string | null;
-  getMethodName(): string | null;
-  getFileName(): string | null;
-  getLineNumber(): number | null;
-  getColumnNumber(): number | null;
-  getEvalOrigin(): string | null;
-  isToplevel(): boolean | null;
-  isEval(): boolean;
-  isNative(): boolean;
-  isConstructor(): boolean;
-  isAsync(): boolean;
-  isPromiseAll(): boolean;
-  getPromiseIndex(): number | null;
-}
-
-function getMockCallSite(
-  fileName: string,
-  lineNumber: number | null,
-  columnNumber: number | null,
-): CallSite {
-  return {
-    getThis(): unknown {
-      return undefined;
-    },
-    getTypeName(): string {
-      return "";
-    },
-    // deno-lint-ignore ban-types
-    getFunction(): Function {
-      return (): void => {};
-    },
-    getFunctionName(): string {
-      return "";
-    },
-    getMethodName(): string {
-      return "";
-    },
-    getFileName(): string {
-      return fileName;
-    },
-    getLineNumber(): number | null {
-      return lineNumber;
-    },
-    getColumnNumber(): number | null {
-      return columnNumber;
-    },
-    getEvalOrigin(): null {
-      return null;
-    },
-    isToplevel(): false {
-      return false;
-    },
-    isEval(): false {
-      return false;
-    },
-    isNative(): false {
-      return false;
-    },
-    isConstructor(): false {
-      return false;
-    },
-    isAsync(): false {
-      return false;
-    },
-    isPromiseAll(): false {
-      return false;
-    },
-    getPromiseIndex(): null {
-      return null;
-    },
-  };
-}
-
 unitTest(function errorStackMessageLine(): void {
   const e1 = new Error();
   e1.name = "Foo";
@@ -122,24 +41,6 @@ unitTest(function errorStackMessageLine(): void {
   assertMatch(e6.stack!, /^null: null\n/);
 });
 
-// FIXME(bartlomieju): no longer works after migrating
-// to JavaScript runtime code
-unitTest({ ignore: true }, function prepareStackTrace(): void {
-  // deno-lint-ignore no-explicit-any
-  const MockError = {} as any;
-  setPrepareStackTrace(MockError);
-  assert(typeof MockError.prepareStackTrace === "function");
-  const prepareStackTrace: (
-    error: Error,
-    structuredStackTrace: CallSite[],
-  ) => string = MockError.prepareStackTrace;
-  const result = prepareStackTrace(new Error("foo"), [
-    getMockCallSite("CLI_SNAPSHOT.js", 23, 0),
-  ]);
-  assert(result.startsWith("Error: foo\n"));
-  assert(result.includes(".ts:"), "should remap to something in 'js/'");
-});
-
 unitTest(function captureStackTrace(): void {
   function foo(): void {
     const error = new Error();